Machine for cutting piles of paper.



0. IOHNE.

MACHINE FOR CUTTING PILES OF PAPER.

APPLICATION FILED IAN-8.1914.

Patented Aug. 17'

cowmnm vmxnmzwn 00., WASHINGTON, b. c.

OTTO JOHN'E, OF BAUTZEN, GERMANYjA SSIGNOR T0 BAUTZNER INDUSTRIEWERK, AKTTENGESELLSCHAFT', OF BA'UTZEN, GERMANY; A FIRM.

MACHINE CUTTING FILES 'OF PAPER;

. Patented Aug. 1'7, 1915.

To all whom it may/concern:

Be it known that I, OTTO J oHNE, engineer,a citizen of the Germa n-Empire, residing at Bautzen, Germany, have inventedcertain new and useful Improvements" in Masprings are arranged in such a manner, that when the clamp or press beam occupies" 1ts highest position, they are not under tension or compression, but that when this beam bears upon the pile of paper, and before the knife commences its cut, they have already received their highest compression.

According to my present invention, the press springs are pivoted at one end to a fixed pivot and at the other end to a lever which is connected with levers for moving the press beam through the agency of a tog gle joint actuated by crank gear.

The device described in my prior specification cited can only be used for cutting machines in which the connecting rods engage the two longitudinal ends of the knife beam and exert traction upon it in a direction perpendicular or partially perpendicular to the direction in which the knife beam is displaced. It is not possible to employ that device, without modification, in what are termed wheel cutting machines. It is precisely this type of machine, however, that is most convenient, simple and eco nomical. The only defect presented by this class of machine as hitherto constructed is that it was impossible .to incorporate with them an automatic clamping mechanism certain in its operation and suitable for higlrspeed power machines.

In particular difficulty was experlenced 1n causing the clamping mechanism w1th p1les of different heights to act automatically be- "fore the cutting begins.

Now in accordance with the present invention the automatic clamping mechanism described in my prior specification is also applicable to wheel cutting machines, that is to say to machinesin which the tension rods act either approximately at the middleor at the end of the knife beam and inwhioh moreover, the tractional effort eX- ert ed by these rods approximately coincideswith the'direction of displacement of theknife beam; j

The invention is illustrated in the accompanying drawings, in which:

Figure'l is a front'elevation' thereof, and Fig. 2isa side elevation.

Thedrive is from the pinion 25 onto the intermediate wheel 24:; upon the same shaft as the latter is mounted'thepinion 23, which meshes with the wheel l7 mounted on the shaft 16. Precisely like the crank disk 18, this wheel 17 comprises an eccentrically mounted stud, which the operating rods 20 of the knife beam 21 engage in the known manner. The shaft 16 also carries the wheel 22, which meshes with the gear wheel 14: mounted on the crank 18 and produces the rotation of the latter. The link 15 connects the crank 13 with the toggle lever constituted by the compression rods 5 and 6,

which is alternately collapsed and extended to the bell-crank lever 7. The tension rod 8 connects the bell-crank levers 7 and 9, with which the compression rods 10 and 11 are connected, thus effecting the connection with the press beam.

The compression rod 5 engages the bellcrank lever 3 at the point 4. On the other eye of this lever the press spring is arranged, its other end bearing against the fixed pivot 2.

The operation and the position of the wheels 22 and let relatively to each other are the same as described in my prior specification cited. The press springs 1 are tensionless when the knife occupies its highest position, but before the knife reaches the pile of paper, compression takes place until the toggle 5 and 6 is extended and the press springs are given their tension, and remain in tension during the cutting operation.

In the embodiment of the invention herein illustrated, a single toggle is employed for the displacement of the press beam on the one hand and for tensioning the springs on the other hand. The toggle joint simultaneously transmits the tension of the spring to the press beam. The toggle joint is operatod in the same manner as the spring pressure mechanism and the press beam in l the main patent. Y

The toggle joint can be subdivided constructionally into separate bell-crank levers,

chines of the character described, in combi- V nation With the cutter thereof, an automatic "paper presser, a sprlng .for actuating said ,presser, a lever to 'Which one end of said actuatingspring is fastened, a fixed pivot for-securing the other end of said spring,

means for operatingthe presser beam, means for connecting said, means With said lever, and means for actuating said means connecting the lever with said means for operating the presser beam, for displacing said presser beam and tensioning the spring in- Copies'of this patent may be obtained for dependently of the cutter, substantially as described.

2. In Wheel. operated paper cutting ma chines of the character described, in combination with the cutter thereoflan automatic,

spring actuated paper presserfa leverto which one end of'said actuating spring is fastened, a fixedpivot for securing the other end ofsaid' spring, levers for operating the] presserjbeam, a toggle joint connecting said levers With said first named lever, and a crank gear for actuating said toggle-joint for displacing the presser beam and tensioning the spring independently oft-the cutter, substantially as described.

In testimony .Whereof I my hand in presence of two subscribing it- V sr 5. 7 i

. OTTO J OHNE.

Witnesses i 7 PAUL ARRAS,

O'r'ro MEDAM.

five cents each, by addressing the Commissioner of Patent Washington, 13. 0,

have hereunto set 

